Reference: http://www.alfawzan.af.org.sa/node/15926
Question: After the death of my father, there ensued a financial disagreement between me and my brother; this disagreement has [now] continued [between us] for [many] years. So, I sought refuge [in Allaah] from Shaytaan the accursed, and began to telephone him and show kindness to him, but he does not reciprocate. I [also] began to visit him with my children to initiate an air of politeness [between us], but he does not let us in[to his house]. So what should my position [now] be [towards my brother], as I feel pain [at our deteriorating state of affairs] O noble Shaykh, since my father and mother have [both] passed away?
Response: You have fulfilled that which was obligatory upon you to do, and he is sinful in [continuing to maintain] this boycott of you. So continue to fulfill your obligation [towards him], and [continue to] telephone him, and visit him; and if he was to respond to you in kind [then that which was desired has been achieved], otherwise the sin shall be upon him [for continuing to boycott you]. He ﷺ said:
«It is not permissible for a man to boycott his Muslim brother for more than three days; each of them turning away from the other when they meet. The better of them is the one who extends the greeting of as-salaam first» [al-Bukhaaree and Muslim]
